Battery case



FIG. 1 is a top right front perspective view showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom thereof. 

The ornamental design for a battery case, as shown and described. 